Metallic car door



1927 A. s. BARROWS METALLIC CAR DOOR Filed Nov. 5, 1925 172 i.

Patented July 26, 1927 UNITED STATES PATENT OFFICE.

ALL AN 8. BARBOWS, 0]? LOS ANGELES, CALIFORNIA.

METALLIC CAR DOOR.

Application filed Rovemb'er 5, 1925. Serial No. 67,176.

This invention relates to improvements in metallic car doors.

An object of the invention is to provide afabricated car door structuremade up of sheet metal having a re-enforced body and edge arrangementafl'ording great strength, durability and simplicity in construction,this application being a continuation in part of my prior application,Serial Number 295,603, filed Ma 8, 1919, now Patent 1,560,526, grantedllovember 20, 1925.

More specifically, the purpose of the .mvention contemplated herein isto provide a metallic door made upof a plurality of sheet metal panelsprovided with strengthening corrugation, together with re-enforcing edgemembers in the form of rolled sections of substantially 2 formation, inwhich one flange of the rolled section is secured to the panelssubstantially in the main plane of the door, and the opposite flange ofwhich extends inwardly of said first flange and is disposed adjacent toor over-hangs certain of the corrugations of the body panels and issecured to the crests or peaks of the corruga-tions, the rolled sectionsbeing provided upon all four edges of the door and secured together toprovide an articulated frame.

Other and further objects of the invention will more clearly appear from-the description and claims hereinafter following.

igure 1 is a front car door made up in accordance with my 111- vention.

'Fi the e 2 is a vertical sectional view of oor substantially von theline 2-2 of Figure L Figure 3 is a horizontal sectional view of the doorconstruction substantially on the. line 3-3 of Figure 1. Figure 4 is avertical sectional view similar to Figure 2, showing a slightlydifferent embodiment of the invention; and Figure 5 is a horizontalsectional view similar to Fi showing the construction illustrated in ure4.

Referring first to Figures 1 to 3, inclusive, the invention contemplatesthe provision of a metallic door of the usual rectangular form, andwhichcomprises a main body portion made up of a plurality of metall1c sheetmetal panels 10, 11 and 12, said panels havin their adjacent horizontaledges overlappe and rigidly connected by welding, or by rivets, asindicated at 13. Each of the panels is made of relatively thin sheetmetal,

Fig-

flange 19, extending elevational view of a' and in order to reduce itsthickness to a minimum consistent with the necessary strength, eachpanel is provided with strengthening means, in this instance being shownas horizontally disposed corrugations 14, the opposite ends of thecorrugations 14 terminating a suitable distance from the extreme outeredges of the 12, as indicated at 15, so as to provide marginal portions16 and 17 outwardly of the corrugations, the marginal portions lyingsubstantially in the main plane of the panels, which is the planedefined by the portions 18 of the door panels between the corrugations14. At the rear edge of the door, and at the outer edge of the marginalportion 17, the panels 10, 11 and 12 are provided with extensionsforming a laterally disposed from top to bottom ofthedoor, said flangebeing designed to provide a spark seal adapted to 'co-operate with the fmounted, in the usual manner.

In conjunction with a door of this character, the edge construction isof great importance, dueto the concentration of strains thereon and thenecessity forbracing the dooras a whole against warping and stresses invarious directions. In providing a reenforced edge construction for themain body portion of the door, including the fabricat ed panels 10, 11and 12, re-enforcing memers of a. suitable character, in this instancerolled sections 20 and 21 of shape, are associated with the edges of thedoor to rectangu ar frame therefor. At the top edge of the door the 2bar 20 extends entirely across the door, and the outwardly turned flange21 thereof is rigidly secured to the marginal portion 17 of the toppanel 1.2 by means of welding or rivets, as indicated at 22, the web 23of said 2 bar extending substantially normal to the main plane of thedoor, and the remaining flange 24 extending inwardly toward the centerof the door and arranged so as to be disposed closely adjacentto, orover-hang,the uppermost corru ation 25 of the panel 12, the flange 24'0% the 2 bar being secured to the crest of the corrugation by suitablemeans such as welding, or rivets, as indicated at 26. The Z bar 20 atthe rear edge of the door has the outwardly turned flange 27 lyingagainst the marginal portion 17, and

substantially Z rame upon which the door is articulated frame made up ofis rigidly connected thereto by suitable means, such as Welding orrivets, as indicated at 28, the web 29 of'the Z barextending laterallyina direction substantially normal to the main plane of the door, 30 ofthe. Z bar is disposed inwardly so as to over-hang the end portions ofthe horizontal corrugations 14.0f all of-the panels 10, 11 and 12, theflange 30 being secured to some or all of the corrugationsld at theirpeaks or crests by welding, or by rivets, as indicated at 31. The Z bar20 at the forward edge of the door has the flange 32 secured to themarginal portion 16, has a laterally extending web- 33, and a flange 3awhich over-hangs the endportions of the corruga tions 14 of the panels10, 11 and 12', and is secured to some or all of said corrugations attheir crests or peaks by welding or by riveting, as indicated at 35. Atthe bottom of the door, the 2 bar 21 is provided with a flange 36secured to the marginal portion 18 of the bottom panel 10, the web 37 ofsaid Z bar extending in a lateral direction substantially perpendicularto the main plane of the door, the flange 38 of said 2 bar extendinginwardly and over-hanging the lowermost corrugation 39 of the bottompanel 10 throughout its extent, the flange 38 being secured to the crestof the corrugation 39 at one or more points, as desired, by means ofwelding or rivets, as indicated at 40.

A. door structure of the character above described, is particularlyadaptable as a bottom supported sliding door, and the door is shown inthe drawings as supported from its bottom for sliding movements. In thedrawings, rollers 41- are shown as mounted upon the car structure by anysuitable means .forming no part of this invention, said rollers 41 beinarranged so as to bear uponthe web 37 o the bottom 2 bar 21 to supportthe door for rolling movement, the flange 36, together with the mar inalportion 18 of the bottom panel 10, eing disposed behind the rollers 41so as to prevent outward swinging of the bottom of the door, suitablewell-known means, not shown, being also associated'with the top of thedoor to guide the same during the sliding movements of the door.

Referring to Figures 4 and 5 of the drawings, a somewhat differentembodiment of the invention is illustrated. In this construction thereare provided fabricated panels 50, 51 and 52, in conjunction with theedges of which is associated arectangu'lar, 2 bars 53 in the same manneras described in connection with Figures 1 to 3. In this embodiment ofthe invention, the panels 50, 51 and 52 are identical with the panels10, 11 and 12, with the exception that upon the forward and rear edgeportions of the panels, said and the flange tion by any panels areprovided with vertical corrugations 53 and 5- the corrugations 53 and 54merging at their tops and bottoms with the horizontal corrugations 55and 56, respectively, the forward and rear edges of the panels extendingoutwardly of the vertical corrugations 53 and- 54 to provide the nunginal portions 56 and 57, and the top and bottom of said panels beingprovided with marginal portions 58 and 59, the marginal portions 57 58and 59 being provided with angularly disposed flanges 60 at their otheredges in the same manner disclosed in F igures l to 3, inclusive. Inthis construction.

' the Z bar 61 at the rear edges of the panels.

has its outwardly disposed flange 62 secured to the marginal portion 57,the web 63 of the 2 bar extending in a lateral direction substantiallynormal to the main plane of the door, and the remaining flange 64 of theZ bar 61 over-hangs the vertical corrugation 54,,as well as the ends ofthe horizontal corrugations 14, the flange 64 of the Z bar being securedtosome or all of the horizontal and vertical corrugations 14 and 54 attheir peaks or crests, as indicated at 65. At the forward edge of thedoor the Z baris attached to the marginal portion 56, and is arrangedwith respect to the corrugation 53 in identically the same mannerdescribed in connection with the 2 bar 62 at the rear edge of the door,and similar reference characters are utilized to designate similarparts.

The top Z bar 66 extends across the face of the door, and the outwardlydisposed flange is disposed to lie against the marginal portion 58, theweb of the 2 bar being disposed substantially at right angles to theoutward- 1 turned ange, and the inwardly turned ange over-hanging thecorrugation 55, and being secured to the crest thereof by any suitablemeans. The bottom Z bar 67 has its outwardly turned flange disposedagainst the marginal portion 59, and has its oppositely disposed flangeover-hanging the lowermost corrugation 56, said opposite flange beingconnected to the crest of the corrugasuitable means.

In order to brace the construction as above described, I provide aplurality of re-enforcing strips 68, 69, and 71. The top reenforcingstrip 68 is; disposed on the inner side of the door, and has its inneredge secured to the main body portion of the door by any suitable means,such as rivets or welding, as indicated at 7 2. said strip spani whichcome .within door, bridges the corrugation 54, and has its outer endsecured to the marginal portion 57 on the main body portion, the extremeouter edge of said strip being turned inwardly at an angle to the mainportion thereof, and operates to provide a spark seal in the same manneras the turned flange portion 19 of the construction disclosed in Figures1 to 3, inclusive. The strip 70 at the forward edge of the door has itsinner edge secured to the main body portion thereof, spans thecorrugation, and has its outer end connected to the marginal portion 56.The strip 69 at the bottom of the door has its inner edge connected tothe main body portion, spans the corrugation 56 and has its out-er endportion secured to the marginal portion 59. The extreme outer edge ofthe strip 69 is turned laterally and rests against the laterally turnedpart of the marginal portion 59.

While I have herein shown and described the preferred manner of carryingout my invention, the same is merely illustrative, and I contemplate allchanges and modifications the scope of the claims appended hereto.

claim:

1. In a car door, the combination with a main body portion composed ofsheet metal, the sheet metal of said body portion, along the rear edgeof the door, being provided with an integral flange sectionsubstantially at right angles to themain plane of the door; of aseparate reinforcing element angular in cross section secured to saiddoor alon the rear edge thereof; and means, ad itional to the main sheetmetal body portion,-for reinforcing the top, front and bottom edges ofthe door.

2. a car door, main body portion comprised of sheet metal and havingincluded therein, intermediate the topand bottom-edges thereof, apluralitydof outwardly disposed, horizontally exten said main bodyportion being integrally flanged substantially at right angles to themain plane of the door at the rear edge thereof; of a reinforcing membersecured to said main body portion along the rear edge thereof; a Z-barextending along the front edge of the. door and secured to said mainbody portion, said Z-bar having one flange thereof outwardly disposedfrom the main plane of the sheet metal body portion and extended towardthe center of the door and secured to the tops of said horizontalcorrugations; and means for reinforcing the top and bottom edges of thedoor.

3. In a car door, the combination with a sheet metal main body .portion;of means for rigidifying and reinforcing the rear edge of said doorincluding a separate member angular in cross section and an additionalstrip both secured to thesheet metal of said main body portion, saidstrip having a right-angular flange formed integrally therewith; andmeans for reinforcing the remaining edges of said door.

In witness have hereunto subscribed my name this 29th day of October,1925.

ALLAN S. BARROWS.

the combination with a mg corrugations, the sheet metal of that I claimthe foregoing I

